A Solid Iridium Catalyst for Diastereoselective Hydrogenation
Iuliia Romanenko1, Louis Jaffeux2, Laurent Veyre1
1Université de Lyon, Institut de Chimie de Lyon, Laboratoire de Chimie, Catalyse, Polymères et Procédés, UMR 5265 CNRS-Université Lyon 1-CPE Lyon), Équipe Chimie Organométallique de Surface, 43 Bd du 11 Novembre 1918, 69616, Villeurbanne, France.
Abstract:
An Ir(NHC) supported catalyst is used in the selective hydrogenation of terpinen-4-ol to cis p-menthan-4-ol. Its activity, selectivity and stability are compared to those of a homogeneous homologue [IrCl(COD)MesImPr] and to a commercial Pd/C. The solid Ir catalyst is much more selective than the Pd catalyst (92 vs. 42 % at 80 °C) but also more active, more selective and more stable than the iridium complex in solution. For the first time, a supported catalyst shows an enhanced activity with respect to a complex in a diastereoselective hydrogenation reaction.
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